#154C98
Closest named color: Cobalt (#1E488F). oklch(42.7% 0.137 258), rgb(21, 76, 152).
Aa
White text reads best on this color (8.33:1).
About this color
#154C98 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.137 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.017 away. White text reads best on it, at 8.33:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.51:1 |
| White text | 8.33:1 |
Values
| HEX | #154C98 |
| RGB | rgb(21, 76, 152) |
| HSL | hsl(215, 76%, 34%) |
| OKLCH | oklch(42.7% 0.137 258) |
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 #154C98 | 8.33:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #154C98 | 2.51:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #154C98 text on white | 8.33:1 | AAA | Lc 88.3 | Fine for body text |
| #154C98 text on black | 2.51:1 | Fails | Lc -13.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#A1C3F5
oklch(81% 0.08 257.9)
-
Step 400
400
#6DA2EF
oklch(70.8% 0.127 257.7)
-
Step 500
500
#4488EA
oklch(63.1% 0.163 257.8)
-
Step 600
600
#236FD9
oklch(55.6% 0.178 258.1)
-
Step 700
700
#155CBC
oklch(49.1% 0.166 258.1)
-
Step 800
800 (this color)
#154C98
oklch(42.7% 0.137 258)
-
Step 900
900
#194079
oklch(37.7% 0.107 258.2)
-
Step 950
950
#102647
oklch(27% 0.068 258.4)
#154C98 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) | #1E549B | 0.025 |
| Deuteranopia (no green cones) | #004897 | 0.016 |
| Tritanopia (no blue cones) | #005E6A | 0.104 |
| Achromatopsia (no color) | #4E4E4E | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #154C98
#154C98
oklch(42.7% 0.137 258)
- #694800
#694800
oklch(42.7% 0.089 78.7)
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 #154C98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.017
- Dusk Blue #26538D ΔE 0.032
- Light Navy #155084 ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.047
- Twilight Blue #0A437A ΔE 0.055
- Blueberry #464196 ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.058
- Sapphire #2138AB ΔE 0.058
Use #154C98 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.