#187E8D
Closest named color: Ocean (#017B92). oklch(54.6% 0.089 210.2), rgb(24, 126, 141).
Aa
White text reads best on this color (4.76:1).
About this color
#187E8D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.089 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.015 away. White text reads best on it, at 4.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.40:1 |
| White text | 4.76:1 |
Values
| HEX | #187E8D |
| RGB | rgb(24, 126, 141) |
| HSL | hsl(188, 71%, 32%) |
| OKLCH | oklch(54.6% 0.089 210.2) |
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 #187E8D | 4.76:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #187E8D | 4.40:1 | AA large text | Lc 31.4 | Non-text elements, placeholder text |
| #187E8D text on white | 4.76:1 | AA | Lc 72.7 | Content text, not long reading |
| #187E8D text on black | 4.40:1 | AA large text | Lc -29.0 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE1
oklch(88.4% 0.022 211)
-
Step 300
300
#A4C8CF
oklch(80.9% 0.04 210.7)
-
Step 400
400
#70ACB7
oklch(70.7% 0.064 210.3)
-
Step 500
500
#4597A5
oklch(63.1% 0.082 210.2)
-
Step 600
600 (this color)
#187E8D
oklch(54.6% 0.089 210.2)
-
Step 700
700
#0A6D7B
oklch(49.1% 0.083 210.6)
-
Step 800
800
#115964
oklch(42.8% 0.068 210.5)
-
Step 900
900
#184951
oklch(37.6% 0.053 210.1)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#187E8D 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) | #71798E | 0.083 |
| Deuteranopia (no green cones) | #626E8D | 0.076 |
| Tritanopia (no blue cones) | #008583 | 0.031 |
| Achromatopsia (no color) | #737373 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #187E8D
#187E8D
oklch(54.6% 0.089 210.2)
- #9D5C51
#9D5C51
oklch(54.6% 0.088 30.4)
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 #187E8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.015
- Teal #008080 ΔE 0.025
- Deep Aqua #08787F ΔE 0.027
- Bluegreen #017A79 ΔE 0.033
- Teal Blue #01889F ΔE 0.035
- Sea Blue #047495 ΔE 0.038
- Dark Cyan #008B8B ΔE 0.041
- Cerulean #457B9D ΔE 0.044
Use #187E8D 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.