#124E71
Closest named color: Deep Sea Blue (#015482). oklch(40.5% 0.083 240), rgb(18, 78, 113).
Aa
White text reads best on this color (8.92:1).
About this color
#124E71 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.083 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.030 away. White text reads best on it, at 8.92:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #124E71 |
| RGB | rgb(18, 78, 113) |
| HSL | hsl(202, 73%, 26%) |
| OKLCH | oklch(40.5% 0.083 240) |
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 #124E71 | 8.92:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #124E71 | 2.35:1 | Fails | Lc 13.9 | Not readable |
| #124E71 text on white | 8.92:1 | AAA | Lc 90.1 | Preferred for body text |
| #124E71 text on black | 2.35:1 | Fails | Lc -12.2 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A5C5DD
oklch(80.8% 0.048 240.6)
-
Step 400
400
#73A7CC
oklch(70.6% 0.077 240.2)
-
Step 500
500
#4B91BF
oklch(63% 0.099 239.7)
-
Step 600
600
#2A7BAC
oklch(55.7% 0.108 239.8)
-
Step 700
700
#1B6793
oklch(49% 0.1 239.7)
-
Step 800
800 (this color)
#124E71
oklch(40.5% 0.083 240)
-
Step 900
900
#1D4660
oklch(37.8% 0.064 239.4)
-
Step 950
950
#122938
oklch(27% 0.04 239.2)
#124E71 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) | #3D4E73 | 0.042 |
| Deuteranopia (no green cones) | #314670 | 0.034 |
| Tritanopia (no blue cones) | #00575A | 0.056 |
| Achromatopsia (no color) | #4A4A4A | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #124E71
#124E71
oklch(40.5% 0.083 240)
- #693D12
#693D12
oklch(40.5% 0.083 60.4)
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 #124E71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.030
- Light Navy #155084 ΔE 0.032
- Dark Grey Blue #29465B ΔE 0.041
- Twilight Blue #0A437A ΔE 0.041
- Charcoal #264653 ΔE 0.051
- Dusk Blue #26538D ΔE 0.051
- Deep Teal #00555A ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.057
Use #124E71 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.