#005B7B
Closest named color: Deep Sea Blue (#015482). oklch(44.2% 0.089 231), rgb(0, 91, 123).
Aa
White text reads best on this color (7.54:1).
About this color
#005B7B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.089 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.027 away. White text reads best on it, at 7.54:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.78:1 |
| White text | 7.54:1 |
Values
| HEX | #005B7B |
| RGB | rgb(0, 91, 123) |
| HSL | hsl(196, 100%, 24%) |
| OKLCH | oklch(44.2% 0.089 231) |
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 #005B7B | 7.54:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #005B7B | 2.78:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #005B7B text on white | 7.54:1 | AAA | Lc 85.7 | Fine for body text |
| #005B7B text on black | 2.78:1 | Fails | Lc -16.4 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#9FC7DC
oklch(80.8% 0.052 231.1)
-
Step 400
400
#68AACB
oklch(70.6% 0.083 231.3)
-
Step 500
500
#3695BE
oklch(63.2% 0.106 230.6)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800 (this color)
#005B7B
oklch(44.2% 0.089 231)
-
Step 900
900
#0D4860
oklch(37.8% 0.07 231)
-
Step 950
950
#0B2A38
oklch(27% 0.044 231.3)
#005B7B 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) | #4B5A7D | 0.060 |
| Deuteranopia (no green cones) | #3C507B | 0.050 |
| Tritanopia (no blue cones) | #006466 | 0.052 |
| Achromatopsia (no color) | #545454 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #005B7B
#005B7B
oklch(44.2% 0.089 231)
- #794320
#794320
oklch(44.2% 0.089 51.4)
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 #005B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.027
- Petrol #005F6A ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.036
- Light Navy #155084 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.046
- Dusk Blue #26538D ΔE 0.046
- Peacock Blue #016795 ΔE 0.051
- Deep Teal #00555A ΔE 0.055
Use #005B7B 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.