#103F3A
Closest named color: Midnight Green (#073B4C). oklch(33.5% 0.05 185.1), rgb(16, 63, 58).
Aa
White text reads best on this color (11.70:1).
About this color
#103F3A is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.050 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.039 away. White text reads best on it, at 11.70:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.79:1 |
| White text | 11.70:1 |
Values
| HEX | #103F3A |
| RGB | rgb(16, 63, 58) |
| HSL | hsl(174, 59%, 15%) |
| OKLCH | oklch(33.5% 0.05 185.1) |
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 #103F3A | 11.70:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #103F3A | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #103F3A text on white | 11.70:1 | AAA | Lc 96.7 | Preferred for body text |
| #103F3A text on black | 1.79:1 | 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
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CBDEDB
oklch(88.6% 0.021 185.4)
-
Step 300
300
#A6C9C4
oklch(80.9% 0.038 185.9)
-
Step 400
400
#75ADA5
oklch(70.6% 0.06 184.8)
-
Step 500
500
#4D9990
oklch(63.2% 0.077 185.4)
-
Step 600
600
#2A837A
oklch(55.6% 0.084 185.5)
-
Step 700
700
#1B6F66
oklch(49.1% 0.078 184.4)
-
Step 800
800
#1A5A54
oklch(42.6% 0.064 186.2)
-
Step 900
900 (this color)
#103F3A
oklch(33.5% 0.05 185.1)
-
Step 950
950
#122C28
oklch(27.1% 0.033 182.6)
#103F3A 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) | #3B3B3A | 0.053 |
| Deuteranopia (no green cones) | #35363B | 0.051 |
| Tritanopia (no blue cones) | #00413D | 0.009 |
| Achromatopsia (no color) | #383838 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103F3A
#103F3A
oklch(33.5% 0.05 185.1)
- #4D2B33
#4D2B33
oklch(33.5% 0.051 5)
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 #103F3A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.044
- Evergreen #05472A ΔE 0.045
- Onyx #343A40 ΔE 0.047
- Dark Teal #014D4E ΔE 0.050
- Charcoal #264653 ΔE 0.053
- Pakistan Green #283618 ΔE 0.053
- Gunmetal #293241 ΔE 0.055
Use #103F3A 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.