#15498D
Closest named color: Cobalt (#1E488F). oklch(41.2% 0.125 257), rgb(21, 73, 141).
Aa
White text reads best on this color (8.86:1).
About this color
#15498D is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.125 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.008 away. White text reads best on it, at 8.86:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.36:1 |
| White text | 8.86:1 |
Values
| HEX | #15498D |
| RGB | rgb(21, 73, 141) |
| HSL | hsl(214, 74%, 32%) |
| OKLCH | oklch(41.2% 0.125 257) |
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 #15498D | 8.86:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #15498D | 2.36:1 | Fails | Lc 14.2 | Not readable |
| #15498D text on white | 8.86:1 | AAA | Lc 89.8 | Fine for body text |
| #15498D text on black | 2.36:1 | Fails | Lc -12.4 | 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 800.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DBF4
oklch(88.6% 0.04 256.6)
-
Step 300
300
#A3C3F0
oklch(80.9% 0.073 256.9)
-
Step 400
400
#70A2E9
oklch(70.6% 0.118 257.2)
-
Step 500
500
#4989E2
oklch(63% 0.15 257.1)
-
Step 600
600
#2A71D0
oklch(55.6% 0.163 257.1)
-
Step 700
700
#1C5EB4
oklch(49.1% 0.151 257.1)
-
Step 800
800 (this color)
#15498D
oklch(41.2% 0.125 257)
-
Step 900
900
#1C4174
oklch(37.7% 0.097 257.1)
-
Step 950
950
#112644
oklch(26.9% 0.062 257.5)
#15498D 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) | #235090 | 0.025 |
| Deuteranopia (no green cones) | #00458C | 0.017 |
| Tritanopia (no blue cones) | #005964 | 0.094 |
| Achromatopsia (no color) | #4A4A4A | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15498D
#15498D
oklch(41.2% 0.125 257)
- #654400
#654400
oklch(41.3% 0.086 77.3)
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 #15498D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.008
- Light Navy #155084 ΔE 0.027
- Dusk Blue #26538D ΔE 0.034
- Twilight Blue #0A437A ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.040
- Blueberry #464196 ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.063
Use #15498D 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.