#103E39
Closest named color: Midnight Green (#073B4C). oklch(33.2% 0.05 184.9), rgb(16, 62, 57).
Aa
White text reads best on this color (11.86:1).
About this color
#103E39 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 11.86:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.77:1 |
| White text | 11.86:1 |
Values
| HEX | #103E39 |
| RGB | rgb(16, 62, 57) |
| HSL | hsl(173, 59%, 15%) |
| OKLCH | oklch(33.2% 0.05 184.9) |
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 #103E39 | 11.86:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #103E39 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #103E39 text on white | 11.86:1 | AAA | Lc 97.0 | Preferred for body text |
| #103E39 text on black | 1.77:1 | 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
#A7C9C4
oklch(81% 0.037 185.6)
-
Step 400
400
#75ADA5
oklch(70.6% 0.06 184.8)
-
Step 500
500
#4E998F
oklch(63.2% 0.077 184.2)
-
Step 600
600
#2C8379
oklch(55.6% 0.083 184.4)
-
Step 700
700
#1D6F66
oklch(49.2% 0.077 184.3)
-
Step 800
800
#1C5A53
oklch(42.6% 0.063 184.6)
-
Step 900
900 (this color)
#103E39
oklch(33.2% 0.05 184.9)
-
Step 950
950
#132B28
oklch(26.8% 0.031 185.1)
#103E39 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) | #3B3A39 | 0.054 |
| Deuteranopia (no green cones) | #34353A | 0.051 |
| Tritanopia (no blue cones) | #003F3C | 0.009 |
| Achromatopsia (no color) | #373737 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103E39
#103E39
oklch(33.2% 0.05 184.9)
- #4B2B32
#4B2B32
oklch(33.2% 0.048 5.9)
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 #103E39, 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 0.047
- Onyx #343A40 ΔE 0.047
- Pakistan Green #283618 ΔE 0.052
- Dark Teal #014D4E ΔE 0.053
- Gunmetal #293241 ΔE 0.054
- Charcoal #264653 ΔE 0.055
Use #103E39 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.