#617DFB
Closest named color: Cornflower (#6A79F7). oklch(63.3% 0.189 270.7), rgb(97, 125, 251).
Aa
Black text reads best on this color (5.83:1).
About this color
#617DFB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.189 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.014 away. Black text reads best on it, at 5.83:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.83:1 |
| White text | 3.59:1 |
Values
| HEX | #617DFB |
| RGB | rgb(97, 125, 251) |
| HSL | hsl(229, 95%, 68%) |
| OKLCH | oklch(63.3% 0.189 270.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #617DFB | 3.59:1 | AA large text | Lc -68.7 | Content text, not long reading |
| Black text on #617DFB | 5.83:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #617DFB text on white | 3.59:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #617DFB text on black | 5.83:1 | AA | Lc -38.4 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CCD8FC
oklch(88.5% 0.051 270.8)
-
Step 300
300
#AABEFD
oklch(80.9% 0.092 270.6)
-
Step 400
400
#7E99FC
oklch(70.6% 0.148 270.7)
-
Step 500
500 (this color)
#617DFB
oklch(63.3% 0.189 270.7)
-
Step 600
600
#4A61E9
oklch(55.5% 0.206 270.8)
-
Step 700
700
#3C4FCB
oklch(49.1% 0.192 270.8)
-
Step 800
800
#3142A4
oklch(42.7% 0.158 270.7)
-
Step 900
900
#2A3982
oklch(37.6% 0.124 270.6)
-
Step 950
950
#19224C
oklch(27% 0.078 271.2)
#617DFB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #368EFF | 0.051 |
| Deuteranopia (no green cones) | #0280F8 | 0.059 |
| Tritanopia (no blue cones) | #009AB0 | 0.162 |
| Achromatopsia (no color) | #878787 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #617DFB
#617DFB
oklch(63.3% 0.189 270.7)
- #A88600
#A88600
oklch(63.4% 0.13 90.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #617DFB, closest first.
No curated palette has a color within ΔE 0.04 of #617DFB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.014
- Soft Blue #6488EA ΔE 0.041
- Clear Blue #247AFD ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.057
- Dodger Blue #1E90FF ΔE 0.061
- Periwinkle #8E82FE ΔE 0.063
- Dark Sky Blue #448EE4 ΔE 0.064
- Lavender Blue #8B88F8 ΔE 0.065
Use #617DFB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.