#618ACC
Closest named color: Faded Blue (#658CBB). oklch(63.2% 0.11 259.6), rgb(97, 138, 204).
Aa
Black text reads best on this color (6.01:1).
About this color
#618ACC is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.110 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.028 away. Black text reads best on it, at 6.01:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.01:1 |
| White text | 3.49:1 |
Values
| HEX | #618ACC |
| RGB | rgb(97, 138, 204) |
| HSL | hsl(217, 51%, 59%) |
| OKLCH | oklch(63.2% 0.11 259.6) |
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 #618ACC | 3.49:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #618ACC | 6.01:1 | AA | Lc 41.7 | Non-text elements, placeholder text |
| #618ACC text on white | 3.49:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #618ACC text on black | 6.01:1 | AA | Lc -39.3 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#ACC2E4
oklch(80.9% 0.054 259)
-
Step 400
400
#81A2D7
oklch(70.8% 0.086 259.7)
-
Step 500
500 (this color)
#618ACC
oklch(63.2% 0.11 259.6)
-
Step 600
600
#4773B9
oklch(55.7% 0.12 259.3)
-
Step 700
700
#39609F
oklch(49.2% 0.111 259.6)
-
Step 800
800
#2F4E81
oklch(42.6% 0.093 259.9)
-
Step 900
900
#2A4167
oklch(37.6% 0.072 260)
-
Step 950
950
#19273D
oklch(27.2% 0.046 259.2)
#618ACC 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) | #708FCF | 0.024 |
| Deuteranopia (no green cones) | #6385CB | 0.013 |
| Tritanopia (no blue cones) | #2999A2 | 0.099 |
| Achromatopsia (no color) | #898989 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618ACC
#618ACC
oklch(63.2% 0.11 259.6)
- #AD8130
#AD8130
oklch(63.2% 0.11 79.3)
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 #618ACC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.042
- Cool Blue #4984B8 ΔE 0.044
- Soft Blue #6488EA ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.048
- Off Blue #5684AE ΔE 0.049
- Steel Blue #4682B4 ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.053
Use #618ACC 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.