#103756
Closest named color: Prussian Blue (#1D3557). oklch(32.6% 0.07 246.4), rgb(16, 55, 86).
Aa
White text reads best on this color (12.33:1).
About this color
#103756 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.070 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.013 away. White text reads best on it, at 12.33:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.33:1 |
Values
| HEX | #103756 |
| RGB | rgb(16, 55, 86) |
| HSL | hsl(207, 69%, 20%) |
| OKLCH | oklch(32.6% 0.07 246.4) |
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 #103756 | 12.33:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #103756 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #103756 text on white | 12.33:1 | AAA | Lc 97.8 | Preferred for body text |
| #103756 text on black | 1.70:1 | Fails | Lc 0.0 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCEC
oklch(88.6% 0.029 244.9)
-
Step 300
300
#A6C5E1
oklch(81% 0.052 245.8)
-
Step 400
400
#75A6D2
oklch(70.7% 0.083 246.4)
-
Step 500
500
#4E8FC7
oklch(63.1% 0.108 246.6)
-
Step 600
600
#2F78B3
oklch(55.5% 0.117 246.5)
-
Step 700
700
#21659A
oklch(49.1% 0.108 246.3)
-
Step 800
800
#1E537D
oklch(42.8% 0.089 246.1)
-
Step 900
900 (this color)
#103756
oklch(32.6% 0.07 246.4)
-
Step 950
950
#13283B
oklch(26.9% 0.045 247.5)
#103756 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) | #293857 | 0.028 |
| Deuteranopia (no green cones) | #1F3255 | 0.020 |
| Tritanopia (no blue cones) | #003E42 | 0.050 |
| Achromatopsia (no color) | #353535 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103756
#103756
oklch(32.6% 0.07 246.4)
- #4C2C03
#4C2C03
oklch(32.6% 0.07 66.3)
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 #103756, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.013
- Midnight Green #073B4C ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.028
- Marine Blue #01386A ΔE 0.035
- Marine #042E60 ΔE 0.038
- Gunmetal #293241 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.058
Use #103756 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.