#005681
Closest named color: Deep Sea Blue (#015482). oklch(43.2% 0.099 240.2), rgb(0, 86, 129).
Aa
White text reads best on this color (7.93:1).
About this color
#005681 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.099 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.007 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #005681 |
| RGB | rgb(0, 86, 129) |
| HSL | hsl(200, 100%, 25%) |
| OKLCH | oklch(43.2% 0.099 240.2) |
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 #005681 | 7.93:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #005681 | 2.64:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #005681 text on white | 7.93:1 | AAA | Lc 86.9 | Fine for body text |
| #005681 text on black | 2.64:1 | Fails | Lc -15.2 | Dividers and decoration only |
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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDED
oklch(88.6% 0.032 239.4)
-
Step 300
300
#9FC6E3
oklch(80.8% 0.058 240.6)
-
Step 400
400
#68A8D5
oklch(70.6% 0.093 240.5)
-
Step 500
500
#3992CA
oklch(63.2% 0.119 240.3)
-
Step 600
600
#007BB6
oklch(55.6% 0.128 240.2)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800 (this color)
#005681
oklch(43.2% 0.099 240.2)
-
Step 900
900
#104666
oklch(37.7% 0.077 240.2)
-
Step 950
950
#0C293C
oklch(26.9% 0.049 240.9)
#005681 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) | #415783 | 0.049 |
| Deuteranopia (no green cones) | #304C80 | 0.038 |
| Tritanopia (no blue cones) | #006165 | 0.066 |
| Achromatopsia (no color) | #515151 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #005681
#005681
oklch(43.2% 0.099 240.2)
- #774103
#774103
oklch(43.3% 0.1 60.3)
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 #005681, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.007
- Light Navy #155084 ΔE 0.020
- Dusk Blue #26538D ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.033
- Cobalt #1E488F ΔE 0.051
- YInMn Blue #415A77 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.054
- Petrol #005F6A ΔE 0.054
Use #005681 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.