#103D37
Closest named color: Midnight Green (#073B4C). oklch(32.8% 0.049 182.7), rgb(16, 61, 55).
Aa
White text reads best on this color (12.03:1).
About this color
#103D37 is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.049 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.041 away. White text reads best on it, at 12.03:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.74:1 |
| White text | 12.03:1 |
Values
| HEX | #103D37 |
| RGB | rgb(16, 61, 55) |
| HSL | hsl(172, 58%, 15%) |
| OKLCH | oklch(32.8% 0.049 182.7) |
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 #103D37 | 12.03:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #103D37 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #103D37 text on white | 12.03:1 | AAA | Lc 97.3 | Preferred for body text |
| #103D37 text on black | 1.74:1 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A7C9C3
oklch(80.9% 0.037 183.5)
-
Step 400
400
#76ADA4
oklch(70.7% 0.059 183.3)
-
Step 500
500
#4F998D
oklch(63.2% 0.077 182)
-
Step 600
600
#2E8378
oklch(55.6% 0.082 183.2)
-
Step 700
700
#206F65
oklch(49.2% 0.076 183)
-
Step 800
800
#1D5A52
oklch(42.6% 0.063 183.1)
-
Step 900
900 (this color)
#103D37
oklch(32.8% 0.049 182.7)
-
Step 950
950
#132B28
oklch(26.8% 0.031 185.1)
#103D37 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) | #3A3937 | 0.053 |
| Deuteranopia (no green cones) | #333438 | 0.050 |
| Tritanopia (no blue cones) | #003E3B | 0.010 |
| Achromatopsia (no color) | #363636 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103D37
#103D37
oklch(32.8% 0.049 182.7)
- #4A2A32
#4A2A32
oklch(32.8% 0.049 3.9)
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 #103D37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.046
- Evergreen #05472A ΔE 0.047
- Pakistan Green #283618 ΔE 0.049
- Onyx #343A40 ΔE 0.049
- Gunmetal #293241 ΔE 0.053
- Dark Teal #014D4E ΔE 0.057
- Charcoal #264653 ΔE 0.059
Use #103D37 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.