#103E37
Closest named color: Midnight Green (#073B4C). oklch(33.1% 0.051 181), rgb(16, 62, 55).
Aa
White text reads best on this color (11.88:1).
About this color
#103E37 is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.051 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.042 away. White text reads best on it, at 11.88:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.76:1 |
| White text | 11.88:1 |
Values
| HEX | #103E37 |
| RGB | rgb(16, 62, 55) |
| HSL | hsl(171, 59%, 15%) |
| OKLCH | oklch(33.1% 0.051 181) |
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 #103E37 | 11.88:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #103E37 | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #103E37 text on white | 11.88:1 | AAA | Lc 97.0 | Preferred for body text |
| #103E37 text on black | 1.76:1 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A7C9C2
oklch(80.9% 0.038 181.5)
-
Step 400
400
#76ADA3
oklch(70.6% 0.06 181.9)
-
Step 500
500
#4E998C
oklch(63.1% 0.078 181)
-
Step 600
600
#2D8376
oklch(55.5% 0.084 181.3)
-
Step 700
700
#1E6F63
oklch(49.1% 0.078 180.9)
-
Step 800
800
#1C5B51
oklch(42.8% 0.065 180.5)
-
Step 900
900 (this color)
#103E37
oklch(33.1% 0.051 181)
-
Step 950
950
#132C27
oklch(27.1% 0.033 179.2)
#103E37 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) | #3B3A37 | 0.054 |
| Deuteranopia (no green cones) | #343538 | 0.051 |
| Tritanopia (no blue cones) | #003F3C | 0.010 |
| Achromatopsia (no color) | #373737 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103E37
#103E37
oklch(33.1% 0.051 181)
- #4B2A34
#4B2A34
oklch(33.1% 0.051 0.7)
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 #103E37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.042
- Evergreen #05472A ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.047
- Pakistan Green #283618 ΔE 0.049
- Onyx #343A40 ΔE 0.049
- Dark Teal #014D4E ΔE 0.054
- Gunmetal #293241 ΔE 0.056
- Charcoal #264653 ΔE 0.058
Use #103E37 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.