#247F8C
Closest named color: Ocean (#017B92). oklch(55% 0.084 209), rgb(36, 127, 140).
Aa
White text reads best on this color (4.67:1).
About this color
#247F8C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.084 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.021 away. White text reads best on it, at 4.67:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.48:1 |
| White text | 4.67:1 |
Values
| HEX | #247F8C |
| RGB | rgb(36, 127, 140) |
| HSL | hsl(188, 59%, 35%) |
| OKLCH | oklch(55% 0.084 209) |
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 #247F8C | 4.67:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #247F8C | 4.48:1 | AA large text | Lc 31.9 | Non-text elements, placeholder text |
| #247F8C text on white | 4.67:1 | AA | Lc 72.2 | Content text, not long reading |
| #247F8C text on black | 4.48:1 | AA large text | Lc -29.5 | 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
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A5C8CE
oklch(80.9% 0.038 209.1)
-
Step 400
400
#73ABB5
oklch(70.6% 0.06 209.9)
-
Step 500
500
#4A97A3
oklch(63.2% 0.078 208.8)
-
Step 600
600 (this color)
#247F8C
oklch(55% 0.084 209)
-
Step 700
700
#176D78
oklch(49.2% 0.078 208)
-
Step 800
800
#175962
oklch(42.8% 0.065 208.3)
-
Step 900
900
#1B4950
oklch(37.7% 0.051 208.9)
-
Step 950
950
#122B2F
oklch(27.1% 0.032 209)
#247F8C 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) | #737A8D | 0.080 |
| Deuteranopia (no green cones) | #656F8C | 0.074 |
| Tritanopia (no blue cones) | #008583 | 0.028 |
| Achromatopsia (no color) | #747474 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #247F8C
#247F8C
oklch(55% 0.084 209)
- #9D5E55
#9D5E55
oklch(55% 0.084 28.8)
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 #247F8C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.021
- Teal #008080 ΔE 0.025
- Deep Aqua #08787F ΔE 0.030
- Teal Blue #01889F ΔE 0.033
- Bluegreen #017A79 ΔE 0.035
- Dark Cyan #008B8B ΔE 0.037
- Cerulean #457B9D ΔE 0.042
- Sea Blue #047495 ΔE 0.043
Use #247F8C 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.