#004889
Closest named color: Cobalt (#1E488F). oklch(40.3% 0.125 253.2), rgb(0, 72, 137).
Aa
White text reads best on this color (9.17:1).
About this color
#004889 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.125 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.019 away. White text reads best on it, at 9.17:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.28:1 |
| White text | 9.17:1 |
Values
| HEX | #004889 |
| RGB | rgb(0, 72, 137) |
| HSL | hsl(208, 100%, 27%) |
| OKLCH | oklch(40.3% 0.125 253.2) |
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 #004889 | 9.17:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #004889 | 2.28:1 | Fails | Lc 13.5 | Not readable |
| #004889 text on white | 9.17:1 | AAA | Lc 90.5 | Preferred for body text |
| #004889 text on black | 2.28:1 | Fails | Lc -11.8 | 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
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DBF4
oklch(88.4% 0.041 254)
-
Step 300
300
#A0C4EF
oklch(80.9% 0.072 253.1)
-
Step 400
400
#6AA4E8
oklch(70.7% 0.117 253.3)
-
Step 500
500
#3E8BE1
oklch(63% 0.15 253.4)
-
Step 600
600
#1673CE
oklch(55.5% 0.162 253.3)
-
Step 700
700
#0360B3
oklch(49% 0.152 253.4)
-
Step 800
800 (this color)
#004889
oklch(40.3% 0.125 253.2)
-
Step 900
900
#144273
oklch(37.6% 0.097 253.1)
-
Step 950
950
#0E2744
oklch(27% 0.062 253.9)
#004889 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) | #234E8B | 0.029 |
| Deuteranopia (no green cones) | #004388 | 0.014 |
| Tritanopia (no blue cones) | #005861 | 0.093 |
| Achromatopsia (no color) | #484848 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004889
#004889
oklch(40.3% 0.125 253.2)
- #644000
#644000
oklch(40.3% 0.086 73.3)
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 #004889, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.019
- Twilight Blue #0A437A ΔE 0.027
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.040
- Dusk Blue #26538D ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.066
- Marine Blue #01386A ΔE 0.067
- Blueberry #464196 ΔE 0.070
Use #004889 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.