#00455E
Closest named color: Dark Grey Blue (#29465B). oklch(36.6% 0.074 230.7), rgb(0, 69, 94).
Aa
White text reads best on this color (10.43:1).
About this color
#00455E is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.074 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.030 away. White text reads best on it, at 10.43:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.01:1 |
| White text | 10.43:1 |
Values
| HEX | #00455E |
| RGB | rgb(0, 69, 94) |
| HSL | hsl(196, 100%, 18%) |
| OKLCH | oklch(36.6% 0.074 230.7) |
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 #00455E | 10.43:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #00455E | 2.01:1 | Fails | Lc 10.2 | Not readable |
| #00455E text on white | 10.43:1 | AAA | Lc 93.7 | Preferred for body text |
| #00455E text on black | 2.01:1 | Fails | Lc -8.8 | 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 900.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C6DDEA
oklch(88.4% 0.03 232.5)
-
Step 300
300
#9DC8DE
oklch(80.9% 0.055 230.5)
-
Step 400
400
#63ABCE
oklch(70.8% 0.089 230.9)
-
Step 500
500
#2C95C1
oklch(63.1% 0.113 230.9)
-
Step 600
600
#007EA8
oklch(55.6% 0.112 230.6)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900 (this color)
#00455E
oklch(36.6% 0.074 230.7)
-
Step 950
950
#082A39
oklch(26.9% 0.047 231.5)
#00455E 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) | #38445F | 0.049 |
| Deuteranopia (no green cones) | #2C3C5E | 0.041 |
| Tritanopia (no blue cones) | #004C4D | 0.043 |
| Achromatopsia (no color) | #404040 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00455E
#00455E
oklch(36.6% 0.074 230.7)
- #5D3217
#5D3217
oklch(36.6% 0.074 50.7)
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 #00455E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.030
- Charcoal #264653 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.039
- Midnight Green #073B4C ΔE 0.040
- Dark Teal #014D4E ΔE 0.044
- Marine Blue #01386A ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.051
Use #00455E 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.