#247EA6
Closest named color: Nice Blue (#107AB0). oklch(56% 0.102 232.5), rgb(36, 126, 166).
Aa
Black text reads best on this color (4.60:1).
About this color
#247EA6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.102 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.023 away. Black text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.60:1 |
| White text | 4.55:1 |
Values
| HEX | #247EA6 |
| RGB | rgb(36, 126, 166) |
| HSL | hsl(198, 64%, 40%) |
| OKLCH | oklch(56% 0.102 232.5) |
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 #247EA6 | 4.55:1 | AA | Lc -76.7 | Fine for body text |
| Black text on #247EA6 | 4.60:1 | AA | Lc 32.8 | Non-text elements, placeholder text |
| #247EA6 text on white | 4.55:1 | AA | Lc 71.3 | Content text, not long reading |
| #247EA6 text on black | 4.60:1 | AA | Lc -30.4 | Non-text elements, placeholder text |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A4C6DA
oklch(80.8% 0.046 233.9)
-
Step 400
400
#71A9C7
oklch(70.7% 0.073 232.6)
-
Step 500
500
#4793B9
oklch(63.1% 0.094 232.7)
-
Step 600
600 (this color)
#247EA6
oklch(56% 0.102 232.5)
-
Step 700
700
#12698D
oklch(49% 0.095 232.4)
-
Step 800
800
#145673
oklch(42.8% 0.079 232.5)
-
Step 900
900
#1A475D
oklch(37.7% 0.061 233)
-
Step 950
950
#112A36
oklch(27.1% 0.038 231.3)
#247EA6 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) | #6A7DA8 | 0.066 |
| Deuteranopia (no green cones) | #5970A5 | 0.057 |
| Tritanopia (no blue cones) | #00898C | 0.061 |
| Achromatopsia (no color) | #767676 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #247EA6
#247EA6
oklch(56% 0.102 232.5)
- #A36237
#A36237
oklch(56% 0.102 52.6)
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 #247EA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.023
- Cerulean #457B9D ΔE 0.025
- Dull Blue #49759C ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.035
- Blue NCS #118AB2 ΔE 0.035
- Teal Blue #01889F ΔE 0.035
- Ocean #017B92 ΔE 0.035
- Stormy Blue #507B9C ΔE 0.036
Use #247EA6 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.