#047EB1
Closest named color: Nice Blue (#107AB0). oklch(56.1% 0.12 236), rgb(4, 126, 177).
Aa
Black text reads best on this color (4.62:1).
About this color
#047EB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.120 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.011 away. Black text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.62:1 |
| White text | 4.54:1 |
Values
| HEX | #047EB1 |
| RGB | rgb(4, 126, 177) |
| HSL | hsl(198, 96%, 35%) |
| OKLCH | oklch(56.1% 0.12 236) |
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 #047EB1 | 4.54:1 | AA | Lc -76.4 | Fine for body text |
| Black text on #047EB1 | 4.62:1 | AA | Lc 33.1 | Non-text elements, placeholder text |
| #047EB1 text on white | 4.54:1 | AA | Lc 70.9 | Content text, not long reading |
| #047EB1 text on black | 4.62:1 | AA | Lc -30.7 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C7DDEB
oklch(88.6% 0.03 235.7)
-
Step 300
300
#A0C7DF
oklch(81% 0.054 235.3)
-
Step 400
400
#69A9CF
oklch(70.6% 0.086 235.9)
-
Step 500
500
#3A93C3
oklch(63.1% 0.11 236)
-
Step 600
600 (this color)
#047EB1
oklch(56.1% 0.12 236)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#114762
oklch(37.7% 0.071 235.5)
-
Step 950
950
#0C2A3A
oklch(27.1% 0.046 235.5)
#047EB1 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) | #657EB3 | 0.069 |
| Deuteranopia (no green cones) | #5070B0 | 0.056 |
| Tritanopia (no blue cones) | #008B90 | 0.074 |
| Achromatopsia (no color) | #767676 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #047EB1
#047EB1
oklch(56.1% 0.12 236)
- #A95F22
#A95F22
oklch(56.1% 0.12 55.7)
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 #047EB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.011
- Blue NCS #118AB2 ΔE 0.036
- Flat Blue #3C73A8 ΔE 0.037
- Windows Blue #3778BF ΔE 0.038
- Steel Blue #4682B4 ΔE 0.039
- Cerulean #457B9D ΔE 0.042
- Muted Blue #3B719F ΔE 0.044
- Cool Blue #4984B8 ΔE 0.045
Use #047EB1 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.