#104F81
Closest named color: Light Navy (#155084). oklch(41.7% 0.103 248.2), rgb(16, 79, 129).
Aa
White text reads best on this color (8.54:1).
About this color
#104F81 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.103 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.007 away. White text reads best on it, at 8.54:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.45:1 |
| White text | 8.54:1 |
Values
| HEX | #104F81 |
| RGB | rgb(16, 79, 129) |
| HSL | hsl(207, 78%, 28%) |
| OKLCH | oklch(41.7% 0.103 248.2) |
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 #104F81 | 8.54:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #104F81 | 2.45:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #104F81 text on white | 8.54:1 | AAA | Lc 89.0 | Fine for body text |
| #104F81 text on black | 2.45:1 | Fails | Lc -13.2 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEF
oklch(88.6% 0.033 248.2)
-
Step 300
300
#A3C5E6
oklch(81% 0.059 247.8)
-
Step 400
400
#6FA6DA
oklch(70.7% 0.096 248)
-
Step 500
500
#468ED0
oklch(63% 0.123 248.6)
-
Step 600
600
#2277BD
oklch(55.5% 0.134 248.4)
-
Step 700
700
#1264A3
oklch(49.1% 0.124 248.1)
-
Step 800
800 (this color)
#104F81
oklch(41.7% 0.103 248.2)
-
Step 900
900
#19446A
oklch(37.7% 0.081 248.4)
-
Step 950
950
#10283E
oklch(27% 0.051 248.4)
#104F81 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) | #375283 | 0.036 |
| Deuteranopia (no green cones) | #264880 | 0.023 |
| Tritanopia (no blue cones) | #005B61 | 0.074 |
| Achromatopsia (no color) | #4C4C4C | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104F81
#104F81
oklch(41.7% 0.103 248.2)
- #6C4100
#6C4100
oklch(41.7% 0.091 68.2)
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 #104F81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.007
- Deep Sea Blue #015482 ΔE 0.015
- Dusk Blue #26538D ΔE 0.029
- Cobalt #1E488F ΔE 0.034
- Twilight Blue #0A437A ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.061
- YInMn Blue #415A77 ΔE 0.064
Use #104F81 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.