#045F90
Closest named color: Peacock Blue (#016795). oklch(46.5% 0.108 241.7), rgb(4, 95, 144).
Aa
White text reads best on this color (6.89:1).
About this color
#045F90 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.108 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.024 away. White text reads best on it, at 6.89:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.04:1 |
| White text | 6.89:1 |
Values
| HEX | #045F90 |
| RGB | rgb(4, 95, 144) |
| HSL | hsl(201, 95%, 29%) |
| OKLCH | oklch(46.5% 0.108 241.7) |
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 #045F90 | 6.89:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #045F90 | 3.04:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #045F90 text on white | 6.89:1 | AA | Lc 83.3 | Fine for body text |
| #045F90 text on black | 3.04:1 | AA large text | Lc -18.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEB
oklch(88.5% 0.029 241.6)
-
Step 300
300
#A4C6E0
oklch(81% 0.052 241.2)
-
Step 400
400
#70A7D1
oklch(70.6% 0.085 242.3)
-
Step 500
500
#4791C4
oklch(63.1% 0.107 241.3)
-
Step 600
600
#237AB1
oklch(55.6% 0.117 241.8)
-
Step 700
700 (this color)
#045F90
oklch(46.5% 0.108 241.7)
-
Step 800
800
#15547B
oklch(42.7% 0.089 241.3)
-
Step 900
900
#1A4663
oklch(37.8% 0.069 241)
-
Step 950
950
#11293A
oklch(27% 0.044 241.7)
#045F90 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) | #476092 | 0.050 |
| Deuteranopia (no green cones) | #35558F | 0.038 |
| Tritanopia (no blue cones) | #006B71 | 0.071 |
| Achromatopsia (no color) | #5A5A5A | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045F90
#045F90
oklch(46.5% 0.108 241.7)
- #834900
#834900
oklch(46.5% 0.107 61.8)
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 #045F90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.024
- Light Navy Blue #2E5A88 ΔE 0.025
- Dusk Blue #26538D ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.038
- Denim #3B638C ΔE 0.039
- Light Navy #155084 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.051
Use #045F90 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.