#154789
Closest named color: Cobalt (#1E488F). oklch(40.4% 0.122 257.1), rgb(21, 71, 137).
Aa
White text reads best on this color (9.15:1).
About this color
#154789 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.122 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.013 away. White text reads best on it, at 9.15:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.29:1 |
| White text | 9.15:1 |
Values
| HEX | #154789 |
| RGB | rgb(21, 71, 137) |
| HSL | hsl(214, 73%, 31%) |
| OKLCH | oklch(40.4% 0.122 257.1) |
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 #154789 | 9.15:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #154789 | 2.29:1 | Fails | Lc 13.3 | Not readable |
| #154789 text on white | 9.15:1 | AAA | Lc 90.6 | Preferred for body text |
| #154789 text on black | 2.29:1 | Fails | Lc -11.7 | 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
#A4C3EF
oklch(81% 0.071 257.1)
-
Step 400
400
#72A2E7
oklch(70.6% 0.114 257.4)
-
Step 500
500
#4B89E0
oklch(63% 0.147 257.2)
-
Step 600
600
#2D71CE
oklch(55.5% 0.159 257.3)
-
Step 700
700
#1F5EB2
oklch(49% 0.148 257.2)
-
Step 800
800 (this color)
#154789
oklch(40.4% 0.122 257.1)
-
Step 900
900
#1D4173
oklch(37.7% 0.095 257.2)
-
Step 950
950
#122643
oklch(26.9% 0.06 257.7)
#154789 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) | #224E8B | 0.024 |
| Deuteranopia (no green cones) | #004388 | 0.017 |
| Tritanopia (no blue cones) | #005761 | 0.093 |
| Achromatopsia (no color) | #484848 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #154789
#154789
oklch(40.4% 0.122 257.1)
- #624200
#624200
oklch(40.5% 0.085 77.5)
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 #154789, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.013
- Twilight Blue #0A437A ΔE 0.028
- Light Navy #155084 ΔE 0.029
- Dusk Blue #26538D ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.042
- Blueberry #464196 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.063
- Light Navy Blue #2E5A88 ΔE 0.064
Use #154789 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.