#124F77
Closest named color: Deep Sea Blue (#015482). oklch(41.1% 0.089 243.1), rgb(18, 79, 119).
Aa
White text reads best on this color (8.71:1).
About this color
#124F77 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.089 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.021 away. White text reads best on it, at 8.71:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.41:1 |
| White text | 8.71:1 |
Values
| HEX | #124F77 |
| RGB | rgb(18, 79, 119) |
| HSL | hsl(204, 74%, 27%) |
| OKLCH | oklch(41.1% 0.089 243.1) |
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 #124F77 | 8.71:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #124F77 | 2.41:1 | Fails | Lc 14.5 | Not readable |
| #124F77 text on white | 8.71:1 | AAA | Lc 89.5 | Fine for body text |
| #124F77 text on black | 2.41:1 | Fails | Lc -12.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A4C5E0
oklch(80.8% 0.052 243.1)
-
Step 400
400
#72A7D1
oklch(70.7% 0.083 243.2)
-
Step 500
500
#4990C5
oklch(63% 0.107 243.3)
-
Step 600
600
#277AB2
oklch(55.7% 0.116 243)
-
Step 700
700
#186699
oklch(49.1% 0.109 243.3)
-
Step 800
800 (this color)
#124F77
oklch(41.1% 0.089 243.1)
-
Step 900
900
#1B4564
oklch(37.6% 0.071 243.7)
-
Step 950
950
#11293A
oklch(27% 0.044 241.7)
#124F77 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) | #3C5079 | 0.040 |
| Deuteranopia (no green cones) | #2E4776 | 0.031 |
| Tritanopia (no blue cones) | #00595D | 0.062 |
| Achromatopsia (no color) | #4B4B4B | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #124F77
#124F77
oklch(41.1% 0.089 243.1)
- #6C3E07
#6C3E07
oklch(41.1% 0.09 63)
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 #124F77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.021
- Light Navy #155084 ΔE 0.022
- Twilight Blue #0A437A ΔE 0.039
- Dusk Blue #26538D ΔE 0.042
- Cobalt #1E488F ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
- Deep Teal #00555A ΔE 0.059
Use #124F77 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.