#06557A
Closest named color: Deep Sea Blue (#015482). oklch(42.6% 0.091 237.2), rgb(6, 85, 122).
Aa
White text reads best on this color (8.11:1).
About this color
#06557A is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.091 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.015 away. White text reads best on it, at 8.11:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.58:1 |
| White text | 8.11:1 |
Values
| HEX | #06557A |
| RGB | rgb(6, 85, 122) |
| HSL | hsl(199, 91%, 25%) |
| OKLCH | oklch(42.6% 0.091 237.2) |
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 #06557A | 8.11:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #06557A | 2.58:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #06557A text on white | 8.11:1 | AAA | Lc 87.6 | Fine for body text |
| #06557A text on black | 2.58:1 | Fails | Lc -14.5 | Not readable |
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
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DDEB
oklch(88.6% 0.03 236.9)
-
Step 300
300
#A1C6DF
oklch(80.8% 0.053 237.9)
-
Step 400
400
#6BA9CF
oklch(70.7% 0.085 236.6)
-
Step 500
500
#3E93C3
oklch(63.2% 0.109 236.9)
-
Step 600
600
#0F7CAF
oklch(55.6% 0.118 237)
-
Step 700
700
#006896
oklch(49.1% 0.108 237.6)
-
Step 800
800 (this color)
#06557A
oklch(42.6% 0.091 237.2)
-
Step 900
900
#144762
oklch(37.8% 0.07 236.4)
-
Step 950
950
#0E293A
oklch(26.9% 0.046 239.3)
#06557A 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) | #43557C | 0.051 |
| Deuteranopia (no green cones) | #344B79 | 0.041 |
| Tritanopia (no blue cones) | #005E62 | 0.056 |
| Achromatopsia (no color) | #505050 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #06557A
#06557A
oklch(42.6% 0.091 237.2)
- #734013
#734013
oklch(42.6% 0.091 57.3)
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 #06557A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.015
- Light Navy #155084 ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.039
- Dusk Blue #26538D ΔE 0.039
- Petrol #005F6A ΔE 0.047
- YInMn Blue #415A77 ΔE 0.052
- Twilight Blue #0A437A ΔE 0.056
- Deep Teal #00555A ΔE 0.056
Use #06557A 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.