#104243
Closest named color: Midnight Green (#073B4C). oklch(34.7% 0.051 197), rgb(16, 66, 67).
Aa
White text reads best on this color (11.15:1).
About this color
#104243 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.051 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.034 away. White text reads best on it, at 11.15:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.88:1 |
| White text | 11.15:1 |
Values
| HEX | #104243 |
| RGB | rgb(16, 66, 67) |
| HSL | hsl(181, 61%, 16%) |
| OKLCH | oklch(34.7% 0.051 197) |
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 #104243 | 11.15:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #104243 | 1.88:1 | Fails | Lc 8.4 | Not readable |
| #104243 text on white | 11.15:1 | AAA | Lc 95.5 | Preferred for body text |
| #104243 text on black | 1.88:1 | 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
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDE
oklch(88.6% 0.021 196.8)
-
Step 300
300
#A5C9C9
oklch(81% 0.038 196.4)
-
Step 400
400
#71ADAE
oklch(70.7% 0.062 197.2)
-
Step 500
500
#47989A
oklch(63% 0.079 197.5)
-
Step 600
600
#218384
oklch(55.7% 0.086 196)
-
Step 700
700
#106E70
oklch(49% 0.079 197.2)
-
Step 800
800
#145A5B
oklch(42.7% 0.066 196.4)
-
Step 900
900 (this color)
#104243
oklch(34.7% 0.051 197)
-
Step 950
950
#112B2C
oklch(26.9% 0.032 198.8)
#104243 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) | #3D3F43 | 0.053 |
| Deuteranopia (no green cones) | #353943 | 0.049 |
| Tritanopia (no blue cones) | #004442 | 0.010 |
| Achromatopsia (no color) | #3B3B3B | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104243
#104243
oklch(34.7% 0.051 197)
- #512E30
#512E30
oklch(34.6% 0.052 16.4)
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 #104243, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.036
- Dark Teal #014D4E ΔE 0.036
- Charcoal #264653 ΔE 0.037
- Onyx #343A40 ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.051
- Evergreen #05472A ΔE 0.052
Use #104243 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.