#103A54
Closest named color: Midnight Green (#073B4C). oklch(33.3% 0.065 240.3), rgb(16, 58, 84).
Aa
White text reads best on this color (11.96:1).
About this color
#103A54 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.065 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.017 away. White text reads best on it, at 11.96:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.75:1 |
| White text | 11.96:1 |
Values
| HEX | #103A54 |
| RGB | rgb(16, 58, 84) |
| HSL | hsl(203, 68%, 20%) |
| OKLCH | oklch(33.3% 0.065 240.3) |
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 #103A54 | 11.96:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #103A54 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #103A54 text on white | 11.96:1 | AAA | Lc 97.1 | Preferred for body text |
| #103A54 text on black | 1.75:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A5C5DD
oklch(80.8% 0.048 240.6)
-
Step 400
400
#73A7CC
oklch(70.6% 0.077 240.2)
-
Step 500
500
#4C91BF
oklch(63.1% 0.099 240)
-
Step 600
600
#2B7AAC
oklch(55.5% 0.108 240.8)
-
Step 700
700
#1C6793
oklch(49.1% 0.1 239.9)
-
Step 800
800
#1B5478
oklch(42.7% 0.083 240.8)
-
Step 900
900 (this color)
#103A54
oklch(33.3% 0.065 240.3)
-
Step 950
950
#122938
oklch(27% 0.04 239.2)
#103A54 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) | #2E3A55 | 0.033 |
| Deuteranopia (no green cones) | #253454 | 0.027 |
| Tritanopia (no blue cones) | #004143 | 0.045 |
| Achromatopsia (no color) | #373737 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103A54
#103A54
oklch(33.3% 0.065 240.3)
- #4E2D0F
#4E2D0F
oklch(33.3% 0.065 59.6)
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 #103A54, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.017
- Dark Blue Grey #1F3B4D ΔE 0.019
- Prussian Blue #1D3557 ΔE 0.021
- Marine Blue #01386A ΔE 0.041
- Gunmetal #293241 ΔE 0.042
- Charcoal #264653 ΔE 0.049
- Marine #042E60 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
Use #103A54 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.