#6181CF
Closest named color: Soft Blue (#6488EA). oklch(61.4% 0.124 266), rgb(97, 129, 207).
Aa
Black text reads best on this color (5.54:1).
About this color
#6181CF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.124 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.042 away. Black text reads best on it, at 5.54:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.54:1 |
| White text | 3.78:1 |
Values
| HEX | #6181CF |
| RGB | rgb(97, 129, 207) |
| HSL | hsl(223, 53%, 60%) |
| OKLCH | oklch(61.4% 0.124 266) |
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 #6181CF | 3.78:1 | AA large text | Lc -70.7 | Content text, not long reading |
| Black text on #6181CF | 5.54:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #6181CF text on white | 3.78:1 | AA large text | Lc 65.2 | Content text, not long reading |
| #6181CF text on black | 5.54:1 | AA | Lc -36.4 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9F0
oklch(88.5% 0.033 266.9)
-
Step 300
300
#AEC0E9
oklch(80.8% 0.061 266.4)
-
Step 400
400
#849FDE
oklch(70.7% 0.098 266.1)
-
Step 500
500 (this color)
#6181CF
oklch(61.4% 0.124 266)
-
Step 600
600
#4E6EC2
oklch(55.5% 0.136 266.4)
-
Step 700
700
#3F5CA7
oklch(49.1% 0.125 266)
-
Step 800
800
#344B88
oklch(42.6% 0.105 266.5)
-
Step 900
900
#2D3F6D
oklch(37.6% 0.082 266.4)
-
Step 950
950
#1A2540
oklch(26.9% 0.053 266.2)
#6181CF 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) | #6289D2 | 0.022 |
| Deuteranopia (no green cones) | #557FCD | 0.016 |
| Tritanopia (no blue cones) | #28929E | 0.112 |
| Achromatopsia (no color) | #838383 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6181CF
#6181CF
oklch(61.4% 0.124 266)
- #A57E06
#A57E06
oklch(61.4% 0.124 86.5)
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 #6181CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.046
- Cool Blue #4984B8 ΔE 0.047
- Faded Blue #658CBB ΔE 0.049
- Steel Blue #4682B4 ΔE 0.053
- Off Blue #5684AE ΔE 0.056
- Windows Blue #3778BF ΔE 0.057
- Water Blue #0E87CC ΔE 0.058
Use #6181CF 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.