#104D71
Closest named color: Deep Sea Blue (#015482). oklch(40.2% 0.084 240.6), rgb(16, 77, 113).
Aa
White text reads best on this color (9.04:1).
About this color
#104D71 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.084 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.032 away. White text reads best on it, at 9.04:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.32:1 |
| White text | 9.04:1 |
Values
| HEX | #104D71 |
| RGB | rgb(16, 77, 113) |
| HSL | hsl(202, 75%, 25%) |
| OKLCH | oklch(40.2% 0.084 240.6) |
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 #104D71 | 9.04:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #104D71 | 2.32:1 | Fails | Lc 13.6 | Not readable |
| #104D71 text on white | 9.04:1 | AAA | Lc 90.4 | Preferred for body text |
| #104D71 text on black | 2.32:1 | Fails | Lc -11.9 | 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 900.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C5DDEF
oklch(88.5% 0.036 240.3)
-
Step 300
300
#9CC7E6
oklch(81% 0.063 239.9)
-
Step 400
400
#62A9DA
oklch(70.8% 0.102 240.4)
-
Step 500
500
#2C92D0
oklch(63.1% 0.13 240.8)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900 (this color)
#104D71
oklch(40.2% 0.084 240.6)
-
Step 950
950
#08293E
oklch(26.9% 0.054 241.2)
#104D71 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) | #3C4E73 | 0.043 |
| Deuteranopia (no green cones) | #2F4570 | 0.033 |
| Tritanopia (no blue cones) | #00565A | 0.056 |
| Achromatopsia (no color) | #494949 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104D71
#104D71
oklch(40.2% 0.084 240.6)
- #683C0E
#683C0E
oklch(40.2% 0.084 61.4)
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 #104D71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.032
- Light Navy #155084 ΔE 0.033
- Twilight Blue #0A437A ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.040
- Charcoal #264653 ΔE 0.051
- Dusk Blue #26538D ΔE 0.053
- Deep Teal #00555A ΔE 0.054
- Cobalt #1E488F ΔE 0.056
Use #104D71 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.