#00729D
Closest named color: Ocean Blue (#03719C). oklch(52% 0.108 233.6), rgb(0, 114, 157).
Aa
White text reads best on this color (5.39:1).
About this color
#00729D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.108 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.003 away. White text reads best on it, at 5.39:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.89:1 |
| White text | 5.39:1 |
Values
| HEX | #00729D |
| RGB | rgb(0, 114, 157) |
| HSL | hsl(196, 100%, 31%) |
| OKLCH | oklch(52% 0.108 233.6) |
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 #00729D | 5.39:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #00729D | 3.89:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #00729D text on white | 5.39:1 | AA | Lc 76.3 | Fine for body text |
| #00729D text on black | 3.89:1 | AA large text | Lc -25.5 | 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 700.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#A0C7DE
oklch(80.9% 0.053 234.2)
-
Step 400
400
#69AACD
oklch(70.8% 0.084 233.2)
-
Step 500
500
#3A94C0
oklch(63.2% 0.107 233.4)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700 (this color)
#00729D
oklch(52% 0.108 233.6)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#104761
oklch(37.6% 0.07 234.2)
-
Step 950
950
#0C2A39
oklch(27% 0.045 233.7)
#00729D 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) | #5C719F | 0.066 |
| Deuteranopia (no green cones) | #4A659C | 0.055 |
| Tritanopia (no blue cones) | #007D81 | 0.064 |
| Achromatopsia (no color) | #6A6A6A | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00729D
#00729D
oklch(52% 0.108 233.6)
- #985524
#985524
oklch(51.9% 0.108 53.6)
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 #00729D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.003
- Sea Blue #047495 ΔE 0.016
- Muted Blue #3B719F ΔE 0.030
- Peacock Blue #016795 ΔE 0.033
- Nice Blue #107AB0 ΔE 0.036
- Ocean #017B92 ΔE 0.037
- Flat Blue #3C73A8 ΔE 0.037
- Dull Blue #49759C ΔE 0.045
Use #00729D 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.