#1C5D5B
Closest named color: Dark Green Blue (#1F6357). oklch(43.8% 0.064 192.1), rgb(28, 93, 91).
Aa
White text reads best on this color (7.59:1).
About this color
#1C5D5B is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.064 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.023 away. White text reads best on it, at 7.59:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #1C5D5B |
| RGB | rgb(28, 93, 91) |
| HSL | hsl(178, 54%, 24%) |
| OKLCH | oklch(43.8% 0.064 192.1) |
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 #1C5D5B | 7.59:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #1C5D5B | 2.76:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #1C5D5B text on white | 7.59:1 | AAA | Lc 86.1 | Fine for body text |
| #1C5D5B text on black | 2.76:1 | Fails | Lc -15.9 | Dividers and decoration only |
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 800.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CADEDD
oklch(88.5% 0.021 193.1)
-
Step 300
300
#A6C9C7
oklch(81% 0.037 192.2)
-
Step 400
400
#74ADAA
oklch(70.7% 0.06 191.7)
-
Step 500
500
#4B9895
oklch(63% 0.076 192)
-
Step 600
600
#278380
oklch(55.7% 0.084 191.8)
-
Step 700
700
#186E6C
oklch(49% 0.077 192.6)
-
Step 800
800 (this color)
#1C5D5B
oklch(43.8% 0.064 192.1)
-
Step 900
900
#1C4A48
oklch(37.7% 0.05 191.3)
-
Step 950
950
#122B2A
oklch(26.9% 0.031 192.1)
#1C5D5B 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) | #57585B | 0.067 |
| Deuteranopia (no green cones) | #4D515C | 0.063 |
| Tritanopia (no blue cones) | #00605C | 0.013 |
| Achromatopsia (no color) | #545454 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C5D5B
#1C5D5B
oklch(43.8% 0.064 192.1)
- #714348
#714348
oklch(43.9% 0.064 13)
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 #1C5D5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.023
- Petrol #005F6A ΔE 0.024
- Deep Teal #00555A ΔE 0.031
- Dark Aqua #05696B ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.044
- Dark Blue Green #005249 ΔE 0.046
- Dark Teal #014D4E ΔE 0.057
- Pine #2B5D34 ΔE 0.060
Use #1C5D5B 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.