#618DC9
Closest named color: Faded Blue (#658CBB). oklch(63.7% 0.103 256.4), rgb(97, 141, 201).
Aa
Black text reads best on this color (6.16:1).
About this color
#618DC9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.103 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.021 away. Black text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.16:1 |
| White text | 3.40:1 |
Values
| HEX | #618DC9 |
| RGB | rgb(97, 141, 201) |
| HSL | hsl(215, 49%, 58%) |
| OKLCH | oklch(63.7% 0.103 256.4) |
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 #618DC9 | 3.40:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #618DC9 | 6.16:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #618DC9 text on white | 3.40:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #618DC9 text on black | 6.16:1 | AA | Lc -40.2 | 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
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAEC
oklch(88.5% 0.028 258.4)
-
Step 300
300
#ACC3E1
oklch(81% 0.049 255.1)
-
Step 400
400
#80A3D3
oklch(70.8% 0.081 256.4)
-
Step 500
500 (this color)
#618DC9
oklch(63.7% 0.103 256.4)
-
Step 600
600
#4574B4
oklch(55.5% 0.113 256.5)
-
Step 700
700
#37619B
oklch(49.1% 0.105 256.8)
-
Step 800
800
#2E507D
oklch(42.8% 0.085 256)
-
Step 900
900
#294265
oklch(37.6% 0.068 257)
-
Step 950
950
#18273B
oklch(27% 0.043 255.9)
#618DC9 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) | #7591CC | 0.028 |
| Deuteranopia (no green cones) | #6986C8 | 0.020 |
| Tritanopia (no blue cones) | #2C9AA2 | 0.091 |
| Achromatopsia (no color) | #8B8B8B | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618DC9
#618DC9
oklch(63.7% 0.103 256.4)
- #AF823C
#AF823C
oklch(63.7% 0.103 76)
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 #618DC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.021
- Cool Blue #4984B8 ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.046
- Off Blue #5684AE ΔE 0.047
- Steel Blue #4682B4 ΔE 0.052
- Silver Lake Blue #778DA9 ΔE 0.054
- Cornflower Blue #6495ED ΔE 0.055
Use #618DC9 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.