#104374
Closest named color: Twilight Blue (#0A437A). oklch(37.8% 0.099 251.7), rgb(16, 67, 116).
Aa
White text reads best on this color (10.11:1).
About this color
#104374 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.099 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.010 away. White text reads best on it, at 10.11:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #104374 |
| RGB | rgb(16, 67, 116) |
| HSL | hsl(209, 76%, 26%) |
| OKLCH | oklch(37.8% 0.099 251.7) |
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 #104374 | 10.11:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #104374 | 2.07:1 | Fails | Lc 10.9 | Not readable |
| #104374 text on white | 10.11:1 | AAA | Lc 93.1 | Preferred for body text |
| #104374 text on black | 2.07:1 | Fails | Lc -9.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF4
oklch(88.6% 0.041 250.6)
-
Step 300
300
#9EC4F0
oklch(80.8% 0.075 252.4)
-
Step 400
400
#67A5E8
oklch(70.8% 0.118 251.5)
-
Step 500
500
#388CE1
oklch(63% 0.151 251.8)
-
Step 600
600
#0174CF
oklch(55.5% 0.165 251.8)
-
Step 700
700
#0061AF
oklch(49% 0.146 251.8)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900 (this color)
#104374
oklch(37.8% 0.099 251.7)
-
Step 950
950
#0C2744
oklch(26.9% 0.063 252.6)
#104374 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) | #2B4676 | 0.027 |
| Deuteranopia (no green cones) | #1A3E73 | 0.015 |
| Tritanopia (no blue cones) | #004F55 | 0.074 |
| Achromatopsia (no color) | #424242 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104374
#104374
oklch(37.8% 0.099 251.7)
- #5C3900
#5C3900
oklch(37.7% 0.081 71.3)
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 #104374, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.010
- Marine Blue #01386A ΔE 0.039
- Light Navy #155084 ΔE 0.045
- Cobalt #1E488F ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.052
- Prussian Blue #1D3557 ΔE 0.060
- Charcoal #264653 ΔE 0.062
Use #104374 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.